Repair
27.To disassemble intake check valve assembly, place intake valve body (32) in a vise and unscrew pack- ing nut (33). Remove seal (38) from nut, and intake valve packings (S) from valve body. Inspect mating surfaces of intake valve body (32) and seat (20) for damage or wear.
The seal (38) is 
require cutting to ease removal.
38
33
S
32
ti10572a
FIG. 17
28.Unscrew bleeder valve plug (40) completely from valve body (39). Clean valve threads and bleed hole. It is not necessary to remove valve body from displacement pump outlet housing (2).
29.Inspect all parts for damage. Clean all parts and threads with a compatible solvent. Reassemble as explained in the Reassembly section.
Reassembly
1.Lubricate the intake valve packings (S) and install them in valve (32). See FIG. 18. See Packing Kits sections for the correct intake valve packing configu- ration.
2.With beveled side facing up, press intake valve seal (38) in to recess of intake valve packing nut (33) until it snaps into place. The nose of the seal should be flush with or slightly recessed into the face of the packing nut. See FIG. 18.
3.Place flats of valve body (32) in a vise. Screw pack- ing nut (33) into valve body handtight. Set intake housing assembly aside.
38
33
S
32
ti10572a
FIG. 18
4.Lubricate piston seal (31) and install it on piston seat (30). Screw piston guide (28) onto seat (30). Place piston seat in a vise and use a brass rod to torque guide; see the following table for correct torque. Snap guide bearing (29) into piston guide (28).
Displacement Pump | Torque |
|
|
60cc and 100cc | |
|
|
200cc and 250cc | |
|
|
500cc | |
|
|
29
28
31
30
ti10573a
FIG. 19
12 | 312375J |